JP5771785B2 - Lamp socket and lighting fixture - Google Patents

Description

The present invention relates to a lamp socket and a lighting fixture .

  Conventionally, lighting fixtures using straight tube fluorescent lamps have been widely used as household lighting fixtures or facility lighting fixtures.

  By the way, in recent years, LED lamps using light-emitting diodes that consume less power than fluorescent lamps are becoming widespread, and LED lamps that can be attached to existing lighting fixtures that use straight tube fluorescent lamps are straight tube types. It is offered to the market as an alternative light source for fluorescent lamps.

  Such an LED lamp uses the same base (G13 type base defined in JIS C 7709-1) as the straight fluorescent lamp so that it can be replaced with a straight fluorescent lamp. The tube diameter and tube length were also formed to the same dimensions as the straight tube fluorescent lamp. Therefore, instead of the straight tube fluorescent lamp, an LED lamp can be mounted as it is in a lamp socket of a lighting fixture corresponding to the straight tube fluorescent lamp.

  Some LED lamps have a built-in power supply circuit and can be lit as they are with a lighting circuit for a fluorescent lamp, but some LED lamps need to be replaced with dedicated lighting circuits. When an LED lamp that requires a dedicated lighting circuit is used in an existing lighting device for a fluorescent lamp, it is necessary to replace the lighting circuit with that for an LED lamp. Therefore, when an existing lighting fixture using a straight tube type fluorescent lamp is remodeled so that the LED lamp can be used, the lighting circuit has been remodeled by replacing it with one for the LED lamp.

Japanese Patent Laying-Open No. 2004-30929 (paragraph [0025] -paragraph [0035] and FIGS. 1 to 2)

  As described above, the straight tube fluorescent lamp and the LED lamp provided as an alternative light source use the same base. Therefore, even after the existing lighting fixture is modified for the LED lamp, the straight tube fluorescent lamp is used again. May be mounted, or LED lamps from other manufacturers may be mounted.

  However, the specifications of the input power are different between straight tube fluorescent lamps and LED lamps, and even LED lamps have different input specifications for each manufacturer. There was a problem that non-lighting occurred.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lamp socket and a lighting fixture in which the possibility that a straight tube lamp is connected to an unintended lamp socket is reduced. is there.

The lamp socket of the present invention includes a straight tubular arc tube containing a circuit board on which an LED is mounted, and a base provided at each of both ends of the arc tube, and the base includes the arc tube. A pair of base pins projecting along the central axis are provided at positions symmetrical with respect to the central axis, and each of the pair of base pins is opposite to the central axis from the tip of the base pin. A straight tube lamp having a bent portion formed so as to protrude is mounted. The lamp socket, the comprises a cap receiving portion to which the mouthpiece of the straight-tube lamp is mounted, the cap receiving part, depending on the rotation of the arc tube includes an insertion groove in which the cap pin is inserted rotated And a power supply terminal that is electrically connected to the base pin when the rotor is rotated, and an escape groove that allows the bent portion to escape.
The lamp socket of the present invention includes a straight tubular arc tube incorporating a circuit board on which an LED is mounted, and a base provided at each end of the arc tube, and the base includes the arc tube. A pair of base pins projecting along the central axis are provided at positions symmetrical with respect to the central axis of the base pin, and each of the pair of base pins from a portion near the tip of the side edge of the base pin, A straight tube lamp having a bent portion formed so as to protrude in a direction intersecting with the circumferential direction around the central axis is mounted. The lamp socket includes a base receiving portion to which the base of the straight tube lamp is mounted, and the base receiving portion includes an insertion groove into which the base pin is inserted, and rotates according to the rotation of the arc tube. And a power supply terminal that is electrically connected to the base pin when the rotor is rotated, and an escape groove that allows the bent portion to escape.

  Moreover, the lighting fixture of the present invention converts the above-described lamp socket, the above-described straight tube lamp, and a commercial power source into electric power suitable for the straight tube lamp, and converts the commercial power supply to the straight tube lamp via the lamp socket. And a lighting circuit to be supplied.

  According to the present invention, since the bent portion is provided on the tip side of the cap pin, there is a possibility that a straight tube lamp as an alternative light source is attached to an existing lamp socket corresponding to a straight tube fluorescent lamp. Can be reduced. Therefore, it is possible to reduce the possibility that the straight tube lamp is erroneously attached to a lighting fixture using the straight tube fluorescent lamp, and it is possible to reduce the possibility that a trouble occurs on the straight tube lamp or the lighting circuit side. . Therefore, a straight tube lamp and a lamp socket that can be mounted on a lamp socket prepared for an alternative light source of a fluorescent lamp and are less likely to be erroneously mounted on the lamp socket for a fluorescent lamp, and a lighting fixture using the same. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS The straight tube | pipe type lamp and lamp socket used for it of Embodiment 1 are shown, (a) is a disassembled perspective view of a lamp socket, (b) is a perspective view at the time of lamp mounting | wearing. The straight tube | pipe type | mold lamp same as the above is shown, (a) is an external appearance perspective view, (b) is a perspective view of a nozzle | cap | die part, (c) is a top view of a nozzle | cap | die part. It is an external appearance perspective view of the lamp socket used for a straight tube | pipe type | mold lamp same as the above. It is sectional drawing of the lamp socket used for a straight tube | pipe type | mold lamp same as the above. (A) is a top view which shows the nozzle | cap | die part of a straight tube | pipe type lamp, (b) is a top view which shows the nozzle | cap | die part of a straight tube | pipe type fluorescent lamp. 4 shows another embodiment of the straight tube type lamp, wherein (a) is a perspective view of the base part, (b) is a plan view of the base part, and (c) is a side view seen from the right side. The straight tube type lamp | ramp of another same form is shown, (a) is a perspective view of a nozzle | cap | die part, (b) is a top view of a nozzle | cap | die part. It is explanatory drawing of a straight tube | pipe type lamp and lamp socket same as the above. The lamp socket used for the straight tube | pipe type | mold lamp same as the above is shown, (a) is an external appearance perspective view, (b) is a principal part expansion perspective view of a nozzle | cap | die receiving part. The lamp socket used for the existing straight tube | pipe type fluorescent lamp is shown, (a) is sectional drawing, (b) is an external appearance perspective view. Fig. 4 shows still another form of the straight tube lamp of the same, wherein (a) is a perspective view of the base part, (b) is a plan view of the base part, and (c) is a side view seen from the right side. It is explanatory drawing of the straight tube | pipe type lamp and lamp socket of Embodiment 2. FIG. It is explanatory drawing of another straight tube | pipe type lamp and lamp socket same as the above. The lighting fixture of Embodiment 3 is shown, (a) is an external appearance perspective view of a fixture main body, (b) is a schematic block diagram of a lighting fixture.

  An embodiment in which the technical idea of the present invention is applied to a straight tube lamp including a light emitting diode as a light source, a lamp socket using the straight tube lamp, and a lighting fixture will be described with reference to the drawings.

(Embodiment 1)
Embodiment 1 of this invention is demonstrated based on FIGS.

  FIG. 2A is an external perspective view of the straight tube lamp 10A, and FIGS. 2B and 2C are enlarged views of a base portion. The straight tube lamp 10A includes a straight tube fluorescent lamp having the same light output, a straight tube light emitting tube 11 having the same lamp length, and a base 12 provided at both ends of the light tube 11. I have. Inside the arc tube 11, a circuit board 15 on which a plurality of light emitting diodes 16 are arranged and mounted in the lamp axis direction on one surface is housed. The light emitting tube 11 is formed of a light-transmitting synthetic resin at a portion irradiated with light from the light emitting diode 16, and the light from the light emitting diode 16 is transmitted to the outside through the light emitting tube 11. Note that the entire arc tube 11 may be made of a light-transmitting material, or a heat radiating fin (not shown) is provided at a portion where the light of the light-emitting diode 16 is not irradiated to efficiently generate heat from the light-emitting diode 16 to the outside. You may make it thermally radiate well.

  Each of the caps 12 on both sides of the straight tube lamp 10A is provided with two cap pins 13 each electrically connected to a power feeding terminal of a lamp socket 20A described later. The two cap pins 13 and 13 are plate-like surfaces whose surfaces are curved along the rotation direction in which the cap 11 is rotated when mounted on the lamp socket, and are symmetrically positioned with respect to the central axis of the arc tube 11. It is provided and extends in a direction parallel to the central axis of the arc tube 11. A bent portion 14 is provided on the tip side of each cap pin 13. The bent portion 14 is bent at a substantially right angle and protrudes in an inner direction (a direction toward the central axis of the arc tube 11). The bases 12 provided at both ends of the arc tube 11 are used for both mechanical holding and electrical connection, but power may be supplied by only the base 12 on one side. When power is supplied by the bases 12 on both sides, the base pin 13 of one base 12 is connected to the positive side of the DC power source, and the base pin 13 of the other base 12 is connected to the negative side of the DC power source. In the case of supplying power only by the base 12 on one side, one of the two base pins 13 provided on the base 12 is connected to the positive side of the DC power source and the other is connected to the negative side of the DC power source. In the case where power is supplied using only the base 12 on one side, there is no electric shock even if the base 12 used for power supply is connected to the socket and the base 12 on the opposite side is touched.

  Next, the lamp socket 20A will be described with reference to FIGS. In the description of the lamp socket 20A, unless otherwise specified, the vertical direction in FIG. 4 is the vertical direction, the horizontal direction in FIG. 4 is the longitudinal direction, and the direction perpendicular to the paper surface in FIG.

  The socket body 21 of the lamp socket 20A includes a box-shaped body 22 that opens on the front side (lamp side), and a cover 23 that is attached to the body 22 so as to close the front opening of the body 22. Both 22 and the cover 23 are made of a synthetic resin molded product.

  On both the left and right sides of the upper portion of the body 22, there are provided fitting portions 22d into which fitting protrusions 23e provided on the cover 23 side are fitted, and sockets by fitting the fitting projections 23e into the respective fitting portions 22d. The main body 21 is assembled.

  Further, on the left and right side wall portions 22b of the body 22, below the fitting portion 22d, ribs (not shown) provided on the fixture body 101 side when the lamp socket 20A is attached to the fixture body 101 (see FIG. 10). An insertion groove 22e is provided along the front-rear direction. Furthermore, a cylindrical support shaft 22c that rotatably supports the rotor 24 is provided on the bottom surface of the body 22 so as to protrude forward.

  The cover 23 has a plate-like front wall portion 23a that closes the front opening of the body 22. A terminal cover 23b is integrally provided on the upper portion of the front wall portion 23a, and a front portion is provided on the lower portion of the front wall portion 23a. A protruding cylindrical terminal accommodating portion 23c is integrally provided. The terminal cover 23b has a plurality (four in this embodiment) of wire insertion holes 23d for inserting electric wires (not shown), and fitting protrusions protruding toward the body 22 at both left and right ends. 23e is provided. The terminal storage portion 23c is provided with a circular insertion hole (not shown) into which the fitting cylinder portion 26 of the rotor 24 is inserted on the front side, and the base pins 13 and 13 of the straight tube lamp 10A. An insertion groove 23f into which is inserted is provided on the lower side.

  The rotor 24 is made of a synthetic resin molded product, and protrudes rearward from the disk-shaped rotor body 25 and the back surface of the rotor body 25, and has a substantially cylindrical shape that rotatably supports the rotor 24 on a support shaft 22c. The fitting cylinder part 26 is integrally provided. When the fitting cylinder part 26 of the rotor 24 is inserted into the insertion groove on the front surface of the cover 23 with the cover 23 attached to the body 22, the support shaft 22 c is inserted into the cylinder of the fitting cylinder part 26. And the rotor 24 is rotatably attached with respect to the support shaft 22c by the rib provided in the inner peripheral surface of the fitting cylinder part 26 fitting in the groove | channel provided in the outer peripheral surface of the support shaft 22c. Insertion grooves 25a are formed in the rotor body 25 from one end to the other end along a line passing through the center position, and terminal confirmation window holes 25b, 25b is provided. Insertion grooves 26a and 26a extending rearward are formed on the peripheral surface of the fitting cylinder portion 26 so as to be continuous with the insertion groove 25a. In addition, insertion grooves 22f and 22f that are open at the front end are formed along the front-rear direction on both the upper and lower sides of the peripheral surface of the support shaft 22c, and in the circumferential direction continuously to each insertion groove 22f. An extending escape groove 22g is formed. The escape groove 22g is provided at a position corresponding to the bent portion 14 of the base pin 13 and extends in the clockwise direction when viewed from the base 12 side. In addition, the width dimension of each of the insertion grooves 23f, 25a, 26a, 22f and the escape groove 22g described above is set to be larger than the diameter of the cap pin 13 and the bent portion 14 of the straight tube lamp 10A. Here, when the rotor 24 is rotated to the position shown in FIG. 3 with the lamp socket 20A assembled, the insertion groove 23f of the terminal housing portion 23c and the insertion groove 25a of the rotor main body 25 are fitted. The insertion groove 26a of the cylindrical portion 26 and the insertion groove 22f of the support shaft 22c are connected. When the straight tube lamp 10A and the straight tube fluorescent lamp are mounted, the cap pin 13 is inserted into the insertion grooves 23f, 25a, 26a, and 22f from the lower side.

  A pair of power supply terminals 27 is housed inside the socket body 21. Each power feeding terminal 27 is made of a conductive material having elasticity (for example, copper alloy), and a speed at which an electric wire (not shown) inserted into the socket body 21 through the electric wire insertion hole 23d is electrically connected. A wire-type wire connection part (not shown) is provided. Each power feeding terminal 27 is integrally provided with a contact spring piece 27a curved in a substantially V shape. The two contact spring pieces 27a are arranged on the left and right sides inside the terminal storage portion 23c on a circumference centering on the rotation center of the rotor 24. Here, a rotor 25 having an insertion groove 25a into which the cap pin 13 is inserted and rotated in accordance with the rotation of the arc tube 11, and the cap pin 13 electrically when the rotor 25 is rotated. A base receiving portion 28 is constituted by the power feeding terminal 27 to be connected.

  Here, when the user attaches the straight tube lamp 10 </ b> A to the instrument body 101 installed at the upper position, the arc tube 11 is held in the hand, and the base pins 13 of the base 12 at both ends are respectively connected to the socket body 21. It inserts in insertion groove 23f, 25a, 26a, 22f from the lower side. When the upper cap pin 13 hits the upper edge of the terminal storage portion 23 c, the two cap pins 13 are arranged on both the upper and lower sides with respect to the outer peripheral surface of the fitting tube portion 26. Also, since the bent portion 14 of each cap pin 13 is located at the opening of the escape groove 22g provided on the support shaft 22c, the cap pins 13 and 13 are rotated along the outer peripheral surface of the fitting tube portion 26. be able to. Thus, when the user rotates the arc tube 11 by about 90 degrees, the rotor 24 is pushed by the base pin 13 and rotates together with the base 12, and the bent portion 14 of the base pin 13 is inserted into the escape groove 22 g. The At this time, since the two cap pins 13 respectively contact the corresponding contact spring pieces 27a, the cap pins 13 are electrically connected to the power feeding terminal 27, and the lighting power from the lighting device is connected to the lamp socket 20A. To the straight tube lamp 10A. When the arc tube 11 rotates about 90 degrees, the base pin 13 moves to the end position of the escape groove 22g, and the two base pins 13 and 13 are arranged side by side. At this time, the insertion grooves 23f, 25a, 26a, 22f are discontinuous, and the cap pins 13, 13 are mechanically held in the lamp socket 20A. Further, when the bent portion 14 is not provided, the arc tube 11 can be moved to the front side (in a direction away from the lamp socket 20A) even when the base 12 is mounted on the lamp socket 20A. May be incomplete. On the other hand, in this embodiment, the bent portion 14 of the cap pin 13 is inserted into the escape groove 22g so that the arc tube 11 cannot move to the front side (in the direction away from the socket body 21). Therefore, the possibility that the cap pin 13 contacts the contact spring piece 27a in an incomplete state can be reduced. In addition, since the contact spring piece 27a is pressed against the base pin 13 by the elastic force of the contact spring piece 27a, the contact spring piece 27a and the base pin 13 can be reliably brought into contact with each other. Further, since the outer pin-to-pin dimension W1 of the two cap pins 13 is set to be substantially the same as the outer pin-to-pin dimension W11 in the case of the G13-type cap, the contact pressure between the cap pin 13 and the contact spring piece 27a. Can be made substantially the same.

  When removing the straight tube type lamp 10A from the lamp socket 20A, if the arc tube 11 of the straight tube type lamp 10A is rotated about 90 degrees in the opposite direction to that at the time of mounting, it is pushed by the cap pin 13 and the rotor 24 is moved. It rotates about 90 degrees counterclockwise. At this time, since the insertion grooves 23f, 25a, 26a, and 22f are arranged in a line, the base tube 13 is moved to the outside of the insertion grooves 23f, 25a, 26a, and 22f by moving the arc tube 11 downward. The tube lamp 10A can be removed from the lamp socket 20A.

  Incidentally, FIG. 5B shows a base portion of a conventional straight tube type fluorescent lamp 50. The straight tube fluorescent lamp 50 includes an arc tube 51 and caps 52 provided at both ends of the arc tube 51. The arc tube 51 is made of a straight tubular glass tube, a phosphor is applied to the inner wall surface, and a discharge gas is sealed inside. The base 52 is made of, for example, a G13 type base standardized by Japanese Industrial Standard (JIS C 7790-1), and holds a filament electrode (not shown) disposed inside the arc tube 51. The base 52 is provided with two base pins 53 electrically connected to the filament electrode, and the two base pins 53 are provided symmetrically with respect to the central axis of the arc tube 51 to emit light. It extends in a direction parallel to the central axis of the tube 51.

  Here, in the above-described lamp socket 20A, the outer diameter dimension D1 of the fitting tube portion 26 is set to be smaller than the inner pin distance W12 of the base pins 53, 53 of the straight tube fluorescent lamp 50. The straight tube fluorescent lamp 50 can be mounted on the lamp socket 20A. That is, the lamp socket 20A of this embodiment is a hybrid type socket in which both the straight tube fluorescent lamp 50 and the straight tube lamp 10A that is an alternative light source of the straight tube fluorescent lamp 50 can be mounted. A lamp can also be installed.

  10 (a) and 10 (b) show an existing lamp socket 20C in which a straight tube fluorescent lamp 50 is mounted. In this lamp socket 20C, an escape groove for letting out the bent portion 14 provided on the cap pin 13 is shown. 22g is not provided. Therefore, even if the straight tube lamp 10A, which is an alternative light source, is to be mounted in the lamp socket 20C, the bending portion 14 interferes with the support shaft 22c (A portion in FIG. 10A), and the rotor 24 can be rotated. Therefore, it cannot be attached to the lamp socket 20C. That is, the straight tube lamp 10A of the present embodiment can be connected to the lamp socket 20A corresponding to itself, but cannot be connected to the existing lamp socket 20C corresponding to the straight tube fluorescent lamp 50, and is not intended. The possibility of being connected to the socket can be reduced. The lamp socket 20C has the same configuration as that of the lamp socket 20A described above except that the escape groove 22g is not provided. The description is omitted.

  Incidentally, in the straight tube lamp 10A shown in FIGS. 1 and 2, the bent portion 14 is formed by bending the entire tip portion of the cap pin 13 inward, but the bent portion 14 has the above shape. It is not intended to be limited.

  For example, as shown in FIGS. 6A to 6C, the base pin 13 is a plate having a curved surface along the direction in which the base 11 is rotated when the lamp is mounted. A bent portion 18 is formed by bending a part of the side edge in the rotational direction inward. In the straight tube lamp 10A of FIG. 6, a part of the side edge is bent at a substantially right angle inward at the tip of the cap pin 13, but a part of the side edge is crossed with the rotation direction. It is only necessary that the bent portion 18 bent in the inner direction is formed by bending.

  Even if this straight tube type lamp 10A is to be mounted on the above-described existing lamp socket 20C, the escape groove 22g for escaping the bent portion 18 is not provided, so that the bent portion 18 interferes with the support shaft 22c, whereby the lamp It cannot be attached to the socket 20C. On the other hand, when the straight tube lamp 10A is mounted on the lamp socket 20A, the bent portion 18 is inserted into the escape groove 22g provided on the support shaft 22c, so that the mounting on the lamp socket 20A is possible. Therefore, this straight tube lamp 10A can be connected to the lamp socket 20A corresponding to itself, but cannot be connected to the existing lamp socket 20C corresponding to the straight tube fluorescent lamp 50, and it can be used as an unintended lamp socket. The possibility of being connected can be reduced. The thickness dimension of the base pin 13 is set to be smaller than the diameter of the base pin provided in the G13 type base.

  Further, in the straight tube lamp 10A shown in FIGS. 1, 2 and 6, bent portions 14 and 18 bent inward are provided on the base pin 13, but the bending directions of the bent portions 14 and 18 are on the inner side. It is not limited to the direction, and a bent portion bent outward may be provided in the base pin 13.

  In the straight tube lamp 10B shown in FIG. 7, the tip end side of the cap pin 13 is bent at a substantially right angle, so that it protrudes outward (in the direction connecting the cap pins 13, 13 toward the opposite side of the central axis). A bent portion 17 is formed. In addition, since it is the same as that of the above-mentioned straight tube | pipe type lamp | ramp 10A except the point which formed the bending part 17 instead of the bending part 14, the same code | symbol is attached | subjected to the common component and the description is given. Omitted.

  8 and 9 (a) and 9 (b) show a lamp socket 20B corresponding to the straight tube lamp 10B, and an escape groove 23g for releasing the bent portion 17 of the cap pin 13 on the inner wall of the terminal accommodating portion 23c. Is formed. Since the escape groove 23g is formed in the terminal housing portion 23c instead of forming the escape groove 22g in the support shaft 22c, it is the same as the lamp socket 20A described above. The description is omitted.

  Here, when the user attaches the straight tube lamp 10B to the lamp socket 20B, the user holds the arc tube 11 and inserts the cap pins 13 of the cap 12 at both ends from the lower side of the socket body 21 into the insertion grooves 23f. , 25a, 26a, 22f. When the upper cap pin 13 hits the upper edge of the terminal storage portion 23 c, the two cap pins 13 are arranged on both the upper and lower sides with respect to the outer peripheral surface of the fitting tube portion 26. Further, since the bent portion 17 of the lower cap pin 13 is located at the opening of the escape groove 23g provided in the terminal storage portion 23c, the cap pins 13 and 13 are placed on the outer peripheral surface of the fitting tube portion 26. Can be rotated along. Thus, when the user rotates the arc tube 11, the rotor 24 is rotated together with the base 12 by being pushed by the base pin 13, and the bent portion 17 of the base pin 13 is inserted into the escape groove 23g. At this time, since the two cap pins 13 respectively contact the corresponding contact spring pieces 27a, the lighting power from the lighting device is supplied to the straight tube lamp 10B via the lamp socket 20B. In addition, since the contact spring piece 27a is pressed against the base pin 13 by the elastic force of the contact spring piece 27a, the contact spring piece 27a and the base pin 13 can be reliably brought into contact with each other. Further, since the outer pin-to-pin dimension W2 of the two cap pins 13 is set to be substantially the same as the outer pin-to-pin dimension W11 in the case of the G13 type cap, the contact pressure between the cap pin 13 and the contact spring piece 27a. Can be made substantially the same.

  On the other hand, when removing the straight tube lamp 10B from the lamp socket 20B, if the arc tube 11 of the straight tube lamp 10B is rotated about 90 degrees in the opposite direction to that at the time of mounting, the cap pin 13 pushes the rotor 24. It rotates about 90 degrees counterclockwise. At this time, since the insertion grooves 23f, 25a, 26a, and 22f are arranged in a line, the base tube 13 is moved to the outside of the insertion grooves 23f, 25a, 26a, and 22f by moving the arc tube 11 downward. The tube lamp 10B can be removed from the lamp socket 20B.

  By the way, the existing lamp socket 20C corresponding to the straight tube type fluorescent lamp 50 is not provided with the escape groove 23g for allowing the bent portion 17 of the cap pin 13 to escape, unlike the lamp socket 20B described above. Therefore, even if the straight tube lamp 10B is to be mounted on the existing lamp socket 20C, the bent portion 17 interferes with the inner wall of the terminal accommodating portion 23c (B portion in FIG. 10A), and rotates the rotor 24. Therefore, it cannot be mounted on the lamp socket 20C.

  In the straight tube lamp 10B shown in FIGS. 7 and 8, the bent portion 17 is formed by bending the entire tip portion of the cap pin 13 substantially at right angles to the outer side. It is not intended to limit to the above shape.

  For example, as shown in FIGS. 11A to 11C, the base pin 13 is a plate having a curved surface along the direction in which the base 11 is rotated when the lamp is mounted. A bent portion 19 is formed by bending a part of the side edge in the rotation direction outward. In the straight tube type lamp 10A of FIG. 11, a part of the side edge is bent at a substantially right angle toward the outer side at the tip of the cap pin 13, but a part of the side edge is crossed with the rotation direction. A bent portion 19 that is bent outward may be formed by bending.

  Even if this straight tube lamp 10B is to be mounted on the above-described existing lamp socket 20C, the escape groove 23g for escaping the bent portion 19 is not provided, so that the bent portion 19 interferes with the inner wall of the terminal accommodating portion 23c. As a result, the lamp socket 20C cannot be mounted. On the other hand, when the straight tube type lamp 10B is mounted in the lamp socket 20B, the bent portion 19 is inserted into the escape groove 23g provided in the inner wall of the terminal housing portion 23, so that it can be mounted in the lamp socket 20B. It becomes. Therefore, this straight tube lamp 10A can be connected to the lamp socket 20B corresponding to itself, but cannot be connected to the existing lamp socket 20C corresponding to the straight tube fluorescent lamp 50, and it can be used as an unintended lamp socket. The possibility of being connected can be reduced.

  As described above, the straight tube lamps 10A and 10B according to the present embodiment are provided with the straight tube type fluorescent lamp 50 and the straight tube type light emitting tube 11 whose lamp length is set to the same dimension, and at both ends of the light emitting tube 11. The base 12 is provided, and two base pins 13 provided on each base 12 are provided. The cap pin 13 is electrically connected to the contact spring piece 27a (the power feeding terminal 27) of the lamp sockets 20A and 20B, and is supplied with the lighting power through the lamp sockets 20A and 20B. In addition, bent portions 14, 17, 18, and 19 are provided on the tip side of each cap pin 13 to prevent erroneous attachment to a lamp socket for a straight tube fluorescent lamp.

  As described above, since the bent portions 14, 17, 18, and 19 are provided on the distal end side of the cap pin 13, the straight tube type as an alternative light source is added to the existing lamp socket 20C corresponding to the straight tube type fluorescent lamp 50. The possibility that the lamps 10A and 10B are mounted can be reduced. Therefore, it is possible to reduce the possibility that the straight tube lamps 10A and 10B are erroneously attached to a lighting fixture that uses the straight tube fluorescent lamp 50, and it is possible to cause a problem on the straight tube lamps 10A and 10B and the lighting circuit side. Can be reduced. Further, since the bent portions 14, 17, 18, and 19 are provided on the base pin 13, for example, it can be easily distinguished from the straight tube type fluorescent lamp 50 provided with a G13 type base, and the possibility of being mistaken for the fluorescent lamp can be reduced. Further, since the bent portions 14, 17, 18, and 19 of the base pin 13 are caught in the relief grooves 22g and 23g of the lamp sockets 20A and 20B, the base pin 13 is difficult to come off halfway. And incomplete connection state is less likely to occur.

  In the case of the lamp sockets 20A and 20B, the outer diameter dimension of the fitting cylinder portion 26 that allows the rotor 24 to rotate is larger than the dimension between the inner pins of the straight tube lamps 10A and 10B, and the G13 type cap is used. The dimension is set to be larger than the inner inter-pin dimension W12.

  Therefore, the lamp sockets 20A and 20B only need to form a relief groove in an existing lamp socket for a straight tube type fluorescent lamp, and a straight tube type fluorescent lamp having a G13 type base and a straight tube type lamp which is an alternative light source. Both can be connected. Therefore, at present, even when the lighting circuit is composed of a circuit for a fluorescent lamp and the straight tube fluorescent lamp 50 is used as the light source, the straight tube as an alternative light source can be obtained by simply replacing the lighting circuit with one for an alternative light source. The mold lamps 10A and 10B can be mounted and used.

  In the straight tube lamps 10A and 10B, the lengths h1 and h2 of the cap pins 13 and the outer pin dimensions W1 and W2 of the two cap pins 13 are the same as the G13 caps provided in the straight tube fluorescent lamp 50. The corresponding dimensions are set.

As a result, the lamp sockets 20A and 20B to which the straight tube type lamps 10A and 10B are mounted and the lamp socket 20C to which the straight tube type fluorescent lamp 50 is mounted can be used in common, and the cost can be reduced. Can be planned. For example, the lamp socket 20A has the same shape as the lamp socket 20C except for the escape groove 22g that allows the bent portions 14 and 18 of the cap pin 13 to escape, so the cover 23, the rotor 24, and the power supply terminal 27 are connected to the lamp socket 20A. Can be shared with the socket 20C. The lamp socket 20B has the same shape as the lamp socket 20C except for the escape groove 23g that allows the bent portions 17 and 19 of the cap pin 13 to escape, so that the body 22, the rotor 24, and the power supply terminal 27 are connected to the lamp socket 20B. Can be shared with the socket 20C. Further, in the straight tube lamps 10A and 10B which are alternative light sources, the dimension between the outer pins of the two cap pins 13 is set to be approximately the same as that of the straight tube fluorescent lamp having the G13 cap. The contact pressure with the power supply terminal on the socket side can be made substantially the same.
Here, the straight tube lamp of the present embodiment includes a straight tubular arc tube incorporating a circuit board on which an LED is mounted, and a base provided at each of both ends of the arc tube. Are provided with a pair of base pins that are plate-like and project along the central axis at positions symmetrical to the central axis of the arc tube, and each of the pair of base pins is provided with the base. A bent portion formed so as to protrude from the tip end portion of the pin in a direction opposite to the central axis is provided.
The straight tube lamp of the present embodiment includes a straight tubular arc tube containing a circuit board on which an LED is mounted, and caps provided at both ends of the arc tube, and the cap includes A pair of base pins that are plate-like and project along the central axis are provided at positions symmetrical to the central axis of the arc tube, and each of the pair of base pins includes the base pin. And a bent portion formed so as to protrude from a portion near the tip of the side edge in a direction intersecting the circumferential direction centering on the central axis.
Furthermore, one of the pair of cap pins may be a cap pin connected to the positive electrode side of the DC power source, and the other may be a cap pin connected to the negative electrode side of the DC power source. Further, among the caps provided at both ends of the arc tube, the cap pin of the cap provided at one end is used as a cap pin connected to the positive electrode side of the DC power source, and at the other end. The base pin of the provided base may be a base pin connected to the negative electrode side of the DC power supply.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the straight tube | pipe type lamp and lamp socket demonstrated in Embodiment 1, and the description is abbreviate | omitted.

  Both the straight tube type lamp 10A and the straight tube type fluorescent lamp 50 can be connected to the lamp socket 20A described in the first embodiment. However, in this embodiment, only the straight tube type lamp 10A which is an alternative light source is provided. It can be installed.

  That is, in the present embodiment, as shown in FIG. 12, the inner pin dimension W3 of the straight tube lamp 10A is set to be larger than the inner pin dimension W12 of the straight tube fluorescent lamp 50 (W3>). W12). Further, in the lamp socket 20A, the outer diameter D2 of the fitting tube portion 26 that allows the rotor 24 to rotate is larger than the inner pin-to-pin dimension W12 of the straight tube fluorescent lamp 50, and between the inner pins of the straight tube lamp 10A. The dimension is set to be smaller than the dimension W3 (W12 <D2 <W3).

  Therefore, even when trying to mount the straight tube fluorescent lamp 50 in the lamp socket 20A, the cap pin 53 interferes with the fitting tube portion 26 and cannot rotate the rotor 24. Therefore, the straight tube fluorescent lamp 50 is mounted. I can't do it. Therefore, the straight tube type lamp 10A, which is an alternative light source, can be mounted in the lamp socket 20A, but the straight tube type fluorescent lamp 50 cannot be mounted, and the possibility that an unapplicable lamp is erroneously mounted is reduced. be able to.

  In the lamp socket 20B described in the first embodiment, only the straight tube lamp 10B that is an alternative light source may be mounted.

  That is, as shown in FIG. 13, the outer diameter dimension D2 of the fitting cylinder portion 26 that allows the rotor 24 to rotate is larger than the inner pin-to-pin dimension W12 in the case of the G13 type base, and the straight tube lamp 10B What is necessary is just to set to the dimension smaller than the dimension W4 between inner side pins (W12 <D2 <W4).

  In this case, even if the straight tube type fluorescent lamp 50 is to be mounted on the lamp socket 20B, the cap pin 53 interferes with the fitting tube portion 26 and the rotor 24 cannot be rotated. Can not be installed. Therefore, the straight tube type lamp 10B as an alternative light source can be mounted in the lamp socket 20B, but the straight tube type fluorescent lamp 50 cannot be mounted, and the possibility that an unapplicable lamp is erroneously mounted is reduced. be able to.

  As described above, in this embodiment, the inner pin-to-pin dimensions W3 and W4 of the cap pins 13 of the straight tube lamps 10A and 10B that are alternative light sources are larger than the inner pin-to-pin dimension W12 of the cap pin 53 of the G13-type cap. Set to dimensions. The outer diameter dimension of the fitting cylinder portion 26 that allows the rotor 24 to rotate is larger than the inner pin-to-pin dimension W12 of the base pin 53 of the G13 type base, and the base pin 13 of the straight tube lamps 10A and 10B. The inner pin-to-pin dimensions W3 and W4 are set to be smaller.

  As a result, the straight tube lamps 10A and 10B, which are alternative light sources, can be mounted in the lamp sockets 20A and 20B, but the straight tube fluorescent lamp 50 cannot be mounted, and a lamp that is not applicable is mounted incorrectly. The possibility of being reduced can be reduced.

(Embodiment 3)
Below, a lighting fixture provided with the lamp socket 20A demonstrated in Embodiment 1 is demonstrated with reference to FIG.

  FIG. 14A shows an external perspective view of the luminaire 100, and FIG. 14B shows a schematic configuration diagram of the luminaire 100. FIG.

  The lighting fixture 100 includes a rectangular parallelepiped fixture main body 101, and a pair of lamp sockets 20A and 20A for mounting the straight tube lamp 10A is attached to the lower surface of the fixture main body 101 with the base receiving portion 28 facing each other. It has been. Further, in the appliance main body 101, a terminal block 103 to which a power line from the commercial power source AC is connected, and the commercial power source AC input via the terminal block 103 is converted into electric power suitable for the straight tube lamp 10A. A lighting circuit 102 is accommodated. The output terminal of the lighting circuit 102 is connected to the lamp sockets 20A and 20A via the internal wiring 104, and the lighting power is supplied to the straight tube lamp 10A attached to the lamp sockets 20A and 20A.

  Here, since both the straight tube type lamp 10A as an alternative light source and the straight tube type fluorescent lamp 50 can be connected to the lamp socket 20A, if the lighting circuit 102 is replaced with a lighting circuit for a fluorescent lamp, the straight tube A type fluorescent lamp 50 can be mounted and used. At the present time, the lighting circuit 102 is composed of a circuit for a fluorescent lamp. Even when the straight tube fluorescent lamp 50 is used as a light source, the lighting circuit 102 can be replaced with an alternative light source. The tube-type lamp 10A can be mounted and used.

  Needless to say, the lamp socket 20A described in the second embodiment may be provided as the lamp socket, and the lamp socket 20B described in the first or second embodiment may be used instead of the lamp socket 20A.

  In each of the above-described embodiments, as an alternative light source for the straight tube fluorescent lamp 50, the straight tube lamps 10A and 10B using light emitting diodes as light sources are described as an example. Needless to say, the lamp used may be used.

10A, 10B Straight tube lamp 11 Arc tube 12 Cap 13 Cap pin 14, 17, 18, 19 Bent portion 20A, 20B Lamp socket 21 Socket body 22c Support shaft 22g Escape groove 23g Escape groove 24 Rotor 25 Rotor body 25a Insertion Groove 26 Fitting cylinder portion 27 Power supply terminal 28 Base receiving portion 100 Lighting fixture 101 Appliance body 102 Lighting circuit

Claims (3)

A straight tube-like arc tube containing a circuit board on which an LED is mounted; and a base provided at each of both ends of the arc tube; the cap is symmetrical with respect to the central axis of the arc tube A pair of base pins projecting along the central axis are provided at positions, and each of the pair of base pins is formed so as to protrude in the opposite direction to the central axis from the tip of the base pin. A lamp socket to which a straight tube lamp with a bent portion is attached,
A base receiving portion to which the base of the straight tube lamp is mounted;
The base receiving portion includes an insertion groove into which the base pin is inserted, and a rotor that is rotated according to the rotation of the arc tube, and when the rotor is rotated, the base pin is electrically connected to the base pin. A lamp socket, comprising: a power feeding terminal to be connected; and an escape groove for allowing the bent portion to escape . A straight tube-like arc tube containing a circuit board on which an LED is mounted; and a base provided at each of both ends of the arc tube; the cap is symmetrical with respect to the central axis of the arc tube A pair of base pins projecting along the central axis are provided at positions, and each of the pair of base pins is a circle centered on the central axis from a portion near the tip of the side edge of the base pin. A lamp socket to which a straight tube lamp having a bent portion formed so as to protrude in a direction crossing the circumferential direction is mounted,
A base receiving portion to which the base of the straight tube lamp is mounted;
The base receiving portion includes an insertion groove into which the base pin is inserted, and a rotor that is rotated according to the rotation of the arc tube, and when the rotor is rotated, the base pin is electrically connected to the base pin. A lamp socket, comprising: a power feeding terminal to be connected; and an escape groove for allowing the bent portion to escape . The lamp socket according to claim 1, the straight tube lamp mounted in the lamp socket, and a commercial power source converted into electric power suitable for the straight tube lamp, and the direct lamp is connected via the lamp socket. A lighting apparatus comprising a lighting circuit for supplying to a tube lamp.

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